Abstract:
:A method was developed for cultivation of the strain Shigella flexneri 2a 77 with two attenuated markers. It ensures the preservation of the initial properties of the strain. The regimen for control of dissolved oxygen level was optimized. It was established that yeast extract is a necessary component of the nutritive medium used. The role of the phase and quantity of the inoculum for growth of the bacterial population has been clarified. Fresh fermenter culture, applied in rats, shows a high immunogenic activity. After lyophilization, the cultures retain 50-70% of the immunogenic activity of the non-lyophilized cultures. The method makes preconditions for the production of a live attenuated dysentery vaccine for oral administration.
journal_name
Vaccinejournal_title
Vaccineauthors
Nenkov P,Bratoeva M,Vitanov T,Marinova S,Denchev V,Linde Kdoi
10.1016/0264-410x(87)90099-5subject
Has Abstractpub_date
1987-09-01 00:00:00pages
192-4issue
3eissn
0264-410Xissn
1873-2518pii
0264-410X(87)90099-5journal_volume
5pub_type
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